* {
  margin: 0;
  padding: 0;
}
body {
  width: 100%;
  height: 100%;
  font-size: 20%;
  font-family: "Helvetica Neue", Helvetica, STHeiTi, sans-serif;
  background: #f2f2f2;
}
a {
  text-decoration: none;
}
ul {
  list-style: none;
}
ul {
  margin: 0;
  padding: 0;
}
li {
  margin: 0;
}
ol {
  margin: 0;
  padding: 0;
}
